1. The problem statement, all variables and given/known data A. Calculate the earth's gravity force on a 70 kg astronaut who is repairing the Hubble Space Telescope 600 km above the earth's surface B. Compare this gravity force with his weight at the earth's surface. (F/w) 2. Relevant equations No idea w=GmEm/RE^2 is just for the weight, but I don't know how to find part 1, which is needed for part 2. 3. The attempt at a solution I don't know what formulas to use to answer these questions. Thanks.